Scooby boost problems and misfire!
#1
Scooby boost problems and misfire!
Hi there! This is my first post since becoming a scooby owner!
I bought my car yesterday, A 95 WRX Wagon import with around 40000 miles, It has a cat back exhaust, forge dump valve, supposedly a remap but cant be sure and a cheap air filter that will soon be thrown away!
Its been going fine until tonight when for the 1st time i really floored it, Through 2nd it was fine, into third pulled like a train, boost seemed to drop, it misfired then pulled like a train again! Unfortunatly i dont have a boost guage so cant really tell if the boost did drop or it was me imagining things! Ever since, the boost seems to peak around 3000-3500rpm and REALLY pull then at about 4000-4500rpm back off a bit!
Has anyone experienced anything similar? Could the plugs be knackered and just not doing the job or maybe need an FCD or maybe something a bit more sinister?
Unfortuantly i dont know a whole lot about scooby issues so any help would be much appreiciated!
Cheers
Adam
I bought my car yesterday, A 95 WRX Wagon import with around 40000 miles, It has a cat back exhaust, forge dump valve, supposedly a remap but cant be sure and a cheap air filter that will soon be thrown away!
Its been going fine until tonight when for the 1st time i really floored it, Through 2nd it was fine, into third pulled like a train, boost seemed to drop, it misfired then pulled like a train again! Unfortunatly i dont have a boost guage so cant really tell if the boost did drop or it was me imagining things! Ever since, the boost seems to peak around 3000-3500rpm and REALLY pull then at about 4000-4500rpm back off a bit!
Has anyone experienced anything similar? Could the plugs be knackered and just not doing the job or maybe need an FCD or maybe something a bit more sinister?
Unfortuantly i dont know a whole lot about scooby issues so any help would be much appreiciated!
Cheers
Adam
#3
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Find out what ecu you have as a true remap for that car will need a mappable ecu.
If the turbo hasn't been changed then your running a td04 make sure someone hasn't fitted a z4 ecu as these are mapped for a td05.
If the turbo hasn't been changed then your running a td04 make sure someone hasn't fitted a z4 ecu as these are mapped for a td05.
#4
Before checking all the expensive stuff (MAFs, ECUs etc), what fuel is it running on? I bought a 96 WRX that had been running on standard unleaded and the (unmapped) ECU had retarded the ignition and limited the boost to half-a-bar. I filled it with Super and for the first 50-60 miles it was misfiring occasionally under load but now it runs like a dream and is boosting at 0.7bar, it's just a case of the ECU adjusting to suit the new fuel. May explain your issues?
OJR.
OJR.
#5
Ah right! Cheers guys!
When i picked the car up it had normal 95ron fuel in it, well a tenners worth anyway! So i fired £40 of BP ultimate and suprisingly it still hasnt used it all! I knew it was on normal fuel as my old MR2 turbo did the same thing. Maybe i should run a tank of ultimate through it and see if it helps! If i just drive it with no more than 1/4-1/3 throttle then its perfect but once i use more then it starts playing up.
I take it the standard WRX ECU isnt remappable then? Also what are the signs of a dump valve giving up the ghost? It was just a thought that crossed my mind.
Oh yeah, the car has a recon TD04 fitted.
Cheers people!
When i picked the car up it had normal 95ron fuel in it, well a tenners worth anyway! So i fired £40 of BP ultimate and suprisingly it still hasnt used it all! I knew it was on normal fuel as my old MR2 turbo did the same thing. Maybe i should run a tank of ultimate through it and see if it helps! If i just drive it with no more than 1/4-1/3 throttle then its perfect but once i use more then it starts playing up.
I take it the standard WRX ECU isnt remappable then? Also what are the signs of a dump valve giving up the ghost? It was just a thought that crossed my mind.
Oh yeah, the car has a recon TD04 fitted.
Cheers people!
#6
Scooby Regular
iTrader: (1)
BP ultimate isn't very good for imprezas,imo, i ran my early import on it and it wasn't happy.
I would recommend running it on Tescos 99 or Vpower (could even give Tescos 97 ron or Esso SUL).
The early ecus normally need a chip/remappable daughter board placed in the spare slot of the ecu (PolarPerformance ,Enduring Solutions Limited)
I would recommend running it on Tescos 99 or Vpower (could even give Tescos 97 ron or Esso SUL).
The early ecus normally need a chip/remappable daughter board placed in the spare slot of the ecu (PolarPerformance ,Enduring Solutions Limited)
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